Improvement in locks for car-seats



E. S. SCOFIELD.

LOCKS FOR CAR-SEATS.

min 66'.

N. FETERS, PHOTO-LITNOGRAFHER, WASHINGTON. D. C-

UNITED STATES PATENT DFFICE.

EDWARD S. SCOFIELD, OF CHICAGO, ILLINOIS, ASSIGNOR TO WASHINGTON DEWEY,OF SAME PLACE.

IMPROVEMENTIN LOCKS FOR CAR-SEATS.

Specification forming part of Letters Patent N0. 170,193, dated November23, 1875; application file March 30, 1875.

To all whom it may concern:

Be it known that I, EDWARD S. SooFIELD, of Chicago, county of Cook andState of Illinois, have invented a new and useful Improvement inDouble-Acting Car-Seat Locks, of which the following is a specification:

The object of the present invention is to provide a lock that will lockthe back of the seat on either side.

The nature of my invention consists in the novel construction of adouble-acting lock applied to the iron arm of the car-seat, so that thearm may belocked in two difierent positions.

In the drawings, Figure l is an elevation of my improvement in doubleacting car-seat locks. Fig. 2 is an enlarged view of my lock with backpart or covering-plate removed, to show the locking device. Fig. 3 is avertical section through Fig. 2, showing also the key for operating thelock. Fig. 4 is a view ofthe catch which enters the look.

a, Fig. 1, represents the wooden arm of the seat, to which the iron armB is I attached at 0, so as to allow it to rotate. The end of the arm Bat m is adapted for fastening to an ordinary car-seat back. D representsa support for arm B, and is rigidly fastened to the wooden arm a. In theiron arm B a case, E, is cast, which forms a covering for the lockingdevices, as hereinafter described.v F F F F are two pairs of levers,pivoted to the case E at i i i i, which form centers for each to turnupon. One lever of each pair is provided with a cog, a, which works in aslot, b, in the opposite lever. ,The levers F F F F are held in thelocked position by the springs H H. These springs are retained inposition by pins g g, and have bearin gs at the points K K K K, formedin the side of the case, so as to force the ends of the springs H Hagainst the levers F F F F. In the outside case E acircular plate, 1?,is placed, having akey-hole, R, and revolves with the key L inunlocking. Back of the plate P is rigidly secured a second plate, Q,having a slot, to, with a circular opening in the center to allow thekey L to turn. A triangular-shaped catch, S, Fig. 4, is formed on thesupport D, so as to enter through a slot, V, in the edge of the case Eof arm 13, and engage with the points it t of levers F F, and thus holdthe arm B securely in place. The case E is provided with two slots, V,one in the upper and the other in the lower edge of the case, for thereception of .a catch, S, so that the arm B may be locked in eitherposition.

To look the iron arm, force it into the support D, when the levers F Fwill automaticin place of springs H H.

Having described my invention, What I claim, and desire to secure byLetters Patent of the United States, is-

The iron arm B, provided with the case E, the key-plates P and Q, incombination with the levers F F F F, the springs H H, and the catch S,as and for the purpose set forth.

EDWARD S. SCOFIELD.

Witnesses;

(WASHINGTON DEWEY, ROYAL E. DEWEY.

